MaxTech xm144ic V.32bis User manual

Brand: MaxTech

Model: xm144ic V.32bis

Category: Networking

Type: User manual

This manual is also suitable for

High Performance

V.32bis/V.42bis

14,400 BPS Internal

FAX/Voice/Data

Modem

User's Manual

Contents

Section One Introduction ........................... 1

Section Two Installation ............................. 1

Section Three AT Command Set .................. 6

Section Four S Register Summary ........... 12

Section Five Result Codes......................... 13

Section Six Troubleshooting ................... 14

Section Seven Specifications ....................... 16

Section Eight Support And Service ........... 17

Section Nine FCC, DOC, Copyright And

Other Notices ....................... 17

Part #MAN0017 Rev 1.1 CL-MD1414ECT-SP

Featuring Advanced

Speakerphone Functions

Section One - Introduction

The 14.4 Kbps Series FAX/Voice/Data Modem con-

nect your computer to all popular high speed modems

available today. This manual describes the hardware instal-

lation procedures for your new modem product. Additional

information on AT commands and S-registers are provided

so that your system can be customized for a particular

operating environment.

Section Two - Installation

This section will provide step by step instructions on

how to install your new 14.4 Kbps FAX/Voice/Data modem.

Installation of this modem product is a two-step process

consisting of actual hardware installation and communica-

tion software installation and configuration.

2.1 Unpacking Your Modem

Before you begin your installation, be certain that you

have all the items listed below. This package contains:

• A modem • A telephone cable

• User's manual • Software for the modem

• Software user's manual

2.2 Hardware Installation

Installation of this modem requires opening and ma-

nipulating your PC. Exercise caution at all times when

working with AC powered and static-sensitive equipment.

Turn off and unplug your PC before installation. Discharge

any static electricity from your body by touching any metal

surface.

1. Turn off and unplug your computer from the AC outlet.

2. Determine how many serial ports are built into your com-

puter (examine the back of your computer). Refer to Figure

2-1 to identify common serial ports.

male connector

Figure 2-1 Common Serial Ports

3. If you have one or more serial ports on the back of your

computer, reconfigure your modem. Your modem is shipped

set to COM1 on IRQ4. Reconfigure the modem to either

COM3/IRQ5 or COM4/IRQ2 (refer to Table 2-1 in Sec-

tion 2.4).

4. Remove your computer's cover

(refer to your computer's owner

manual).

5. Select any available half-card

slot, and then remove the slot

cover (refer to Figure 2-2).

6. Carefully slide the internal mo-

dem into the slot you have cho-

sen, applying even pressure un-

til the modem is completely

seated in the slot.

7. Fasten the retaining bracket

with the screw from the slot cover. Make sure the modem is

properly aligned. Store the slot cover for future use.

8. Replace the computer cover and plug in your computer.

9. Connect the telephone cable from the modem (“LINE”

connector) to the telephone wall jack.

10. Optionally connect: 1) your telephone to the modem's

“PHONE” connector, 2) a speaker to the modem's “SPKR”

connector, and 3) a microphone to the modem's “MIC”

connector. Note that the distance between the microphone

and the speaker must be greater than twelve (12) inches

to prevent unpleasant speaker feedback.

11. Turn your computer on. Your modem is now installed.

2.3 Software Installation/Configuration

You are now ready to install and configure the commu-

nication software. Refer to your software manual for instal-

lation procedures. Your software must be configured to

communicate with the modem on the same COM port and

IRQ line used by the modem.

If you are using Microsoft Windows 3.x and have

changed the modem's operating setting from the default COM1/

IRQ4 to COM3/IRQ5 or COM4/IRQ2 to avoid a conflict, you

must use Windows' Control Panel (in the “Main” Group

within Program Manager) to configure Windows to recognize

the new settings before installing any software. In Control

Panel, double-click on Ports. Click once on the icon for the

Com port you have set your modem to. Click the Settings

button. Click the Advanced button. The Base I/O Port

Figure 2-2

Expansion

Slots

Address should already be set by Windows to the COM port

address used by the modem (refer to Table 2-1). Change the

Interrupt Request Line (IRQ) to match the IRQ on the

modem. If you have set the modem to COM4/IRQ2, do not

select IRQ2. You will need to set the IRQ in Control Panel to

IRQ9 for Windows to recognize the modem. (In an operating

system designed for 286 or better machines, IRQ 9 is

equivalent (redirected) to IRQ2.)

A modem setting which skips one or more COM port

assignments requires special attention in the Windows 3.x

Control Panel. For example, if your computer is equipped

with two serial ports (COM1 and COM2) and have set the

modem to COM4 instead of COM3, the Control Panel

settings for COM4 may say Default. In this case, Windows

3.x will operate the modem as the third serial device and

recognize it as “COM3” (This unusual COM port reassign-

ment does not occur in future releases of Windows). The

correct COM4 address (2E8) has been placed into the

Control Panel COM3 position. Configure the COM3 entry in

Control Panel by changing the IRQ box to match the IRQ that

has been set on the modem. (When running any Windows

3.x-based communication or fax programs, select COM3 as

the COM port for the modem.)

After these settings are made, click OK. Click Restart

Now. Windows can now recognize your modem.

Note: Since the “COM3” substitution for your

COM4 modem only occurs under Windows 3.x,

your DOS communication and fax programs will

still recognize the modem configuration as COM4.

We suggest the following communication parameters

when you first use your data communication software.

Consult the software manual for information on using these

and other parameters/features.

38,400 bps; 8 data bits; no parity; 1 stop bit; RTS/

CTS flow control set to “on;” initialization string:

AT&F

The commands used by the modem are compatible

with the command set used by Intel modems. Select an “Intel

144I Faxmodem” type in your data communications soft-

ware, select a “Generic Class 1” type in your fax software

and select “Cirrus Logic” in your Voice software.

2.4 COM Port and Interrupt Settings

If your computer is equipped with one or more serial

ports, you will need to change the COM Port setting on the

modem (to either COM 3 or 4), or disable the PC's built-in

COM port.

An IRQ (interrupt request) is a signal generated by an

I/O device that notifies the computer of incoming data. Your

internal modem is capable of accessing IRQs 2, 3, 4, and 5.

I/O devices in your computer cannot share an IRQ with

another device at the same time. Since IRQs can not be

shared at the same time, COM 3 is generally configured to use

IRQ 5, and COM 4 to use IRQ 2. This avoids sharing of IRQs

with COM 1 (IRQ4) and COM 2 (IRQ3).

To change the default COM Port or IRQ settings from

COM 1/IRQ 4 to another setting, locate the Switch Block on

your internal modem (Figure 2-3). Refer to Table 2-1 to

configure the Switch Block to the COM Port and IRQ

Table 2-1 Switch Block Settings

SW-1

Figure 2-3 Switch Block SW-1 Location

COM Port IRQ SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6

1 (3F8)

default

4 ON ON OFF OFF ON OFF

2 (2F8) 3 OFF ON OFF ON OFF OFF

3 (3E8) 5 ON OFF OFF OFF OFF ON

4* ON OFF OFF OFF ON OFF

4 (2E8) 2(9)** OFF OFF ON OFF OFF OFF

3* OFF OFF OFF ON OFF OFF

* Use these IRQs only if your software can not address IRQ5 or IRQ2

** When using Windows with the modem set for IRQ2, select IRQ9 in

Control Panel

combination needed for your application. Any time the

COM or IRQ setting for the modem is changed, the

settings in the software must be changed to match.

2.5 Using Fax, Voice, and Speakerphone

Capabilities of the Modem

Your modem has built-in advanced FAX, Voice, and

Speakerphone functions. These functions are accessed

through software. Please consult your FAX/Voice/Speaker-

phone software manual about procedures on using these

functions. Note that the modem's FAX/Voice/Speakerphone

commands are used by the software to implement these

functions and are not designed to be used as standalone AT

commands.

Voice functions include recording and playback of

voice prompts (files). To record or playback voice with your

modem, attach a telephone to the RJ-11 jack marked

“PHONE” on the back of the modem. Follow specific instruc-

tions in the FAX/Voice/Speakerphone software on recording

and playback of voice prompts.

2.6 Testing Your Modem After Installation

In order to test your modem you should be familiar

with your communication software. Load and set up your

communication software and enter into “terminal mode.”

Make sure that the COM Port and IRQ settings of the modem

match the software. Type AT on your terminal screen and

press ENTER. You may see “AATT” or nothing on the

screen. In either case, the modem should respond with an OK

or 0. If it does not, please refer to Section 2.4 for information

on COM Ports and IRQ’s or Section 6 for troubleshooting

information.

2.7 Using Your Modem

The communication software included with your mo-

dem product provides a user friendly interface to access the

fax, voice, and data functions of your modem. This software

should be sufficient for all of your communication needs.

There may be times when you need to access the modem

manually via modem commands. Read Section 3 for a

summary description of the modem command set before

manually accessing the modem. You may want to read the

software manual first, however, as the software may already

provide a user friendly method of accessing the functions you

need (i.e. dialing or answering calls).

2.8 Where To Go From Here

You should familiarize yourself with the functions

available from the included software by reading its manual.

You will be accessing most, if not all, of the modem's

functions from this software. You may also use any other

commercially available communication software with the

modem. Read Section 3 ONLY if you are interested in

accessing the modem manually, and not through the included

software. Section 4 and 5 contain reference material, and can

be skipped. If you have difficulties getting your modem to

work, read Section 6, Troubleshooting to find answers to

commonly asked questions and problems.

Section Three - AT Command Set

3.1 Executing Commands

Commands are accepted by the modem while it is in

Command Mode. Your modem is automatically in Com-

mand Mode until you dial a number and establish a connec-

tion. Commands may be sent to your modem from a PC

running communication software or any other terminal de-

vices.

Your modem is capable of data communication at rates

of: 300, 1200, 2400, 4800, 9600, 14400, 19200, 38400, and

57600 bps. Make sure your COM port baud rate setting in

your communications software is set to one of the above

speeds.

3.2 Command Structure

All commands sent to the modem must begin with AT

and end with ENTER. All commands may be typed in either

upper or lower case, but not mixed. To make the command

line more readable, spaces may be inserted between com-

mands. If you omit a parameter from a command that

requires one, it is just like specifying a parameter of 0.

Example:

ATH [ENTER]

This command causes your modem to hang up.

3.3 Basic AT Commands

In the following listings, all default settings are printed

in bold text.

Command Function

A Manually answer incoming call

A/ Repeat last command executed. Do not precede

A/ with AT or follow with ENTER

AT Appears at the beginning of every command

line

B_ B0 CCITT mode

B1 Bell mode

D_ 0 - 9, A-D, # and *

P pulse dialing

R originate calls in answer mode

T touch-tone dialing

W wait for second dial tone

, pause

@ wait for five seconds of silence

! flash

; return to Command Mode after dialing

DS=n Dial one of the four telephone numbers (n=0-

3) stored in the modem’s non-volatile memory

E_ E0 Commands are not echoed

E1 Commands are echoed

+++ TIES Escape Characters - Switch from Data

Mode to Command Mode

H_ H0 Force modem on-hook (hang up)

H1 Force modem off-hook (make busy)

I_ I0 Display product-identification code

I1 Factory ROM ID

I2 Internal memory test

I3 Device ID

I4 Internal ID

L_ L0 Low speaker volume

L1 Low speaker volume

L2 Medium speaker volume

L3 High speaker volume

M_ M0 Internal speaker off

M1 Internal speaker on until carrier detected

M2 Internal speaker always on

M3 Internal speaker on until carrier detected and

off while dialing

N_ N0 Connect only at DTE rate

N1 Automatic rate negotiation

O_ O0 Return to Data Mode

O1 Return to Data Mode and initiate an equalizer

retrain

P Set Pulse dial as default

Q_ Q0 Modem sends responses

Q1 Modem does not send responses

Sr? r=0-30 Read and display value in register r

Sr=n Set register r to value n (r=0-30; n=0-255)

T Set Tone Dial as default

V_ V0 Numeric responses

V1 Word responses

X_ X0 Hayes Smartmodem 300 compatible

responses/blind dialing

X1 Same as X0 plus all CONNECT responses/

blind dialing

X2 Same as X1 plus dial tone detection

X3 Same as X1 plus busy signal detection/blind

dialing

X4 All responses and dial tone and busy signal

detection

Y_ Y0 Modem does not send or respond to break

signals

Y1 Modem sends break signal for four seconds

before disconnecting

Z_ Z0 Reset and retrieve active configuration

profile 0

Z1 Reset and retrieve active configuration

profile 1

3.4 Extended AT Commands

&C_ &C0 Force Carrier Detect Signal High (ON)

&C1 Turn on Carrier Detect signal when remote

carrier signal is present

&D_ &D0 Modem ignores the Data Terminal Ready

signal

&D1 Modem returns to Command Mode after DTR

toggle

&D2 Modem hangs up, returns to the Command

Mode after DTR toggle

&D3 Resets modem after DTR toggle

&F_ &F Recall factory default configuration

&G_ &G0 Guard tone disabled

&G1 550 Hz guard tone

&G2 1800 Hz guard tone

&M_ &M0 Asynchronous operation

&P_ &P0 United States setting for off-hook (make) -

to-on-hook (break) ratio

&P1 UK and Hong Kong off-hook (make)-to-on-

hook (break) ratio

&S_ &S0 Force DSR Signal High (ON)

&S1 DSR is off in command mode, on in on-line

mode

&T_ &T0 Ends test in progress

&T1 Perform Local Analog Loopback Test

&T3 Perform Local Digital Loopback Test

&T4 Grant Remote Digital Loopback Test

request by remote modem

&T5 Deny Remote Digital Loopback Test request

by remote modem

&T6 Perform a Remote Digital Loopback Test

&T7 Perform a Remote Digital Loopback Test and

Self-Test

&T8 Perform Local Analog Loopback Test and

Self-Test

&U_ &U0 Enable Trellis Coding @ V.32

&U1 Disable Trellis Coding @ V.32

&V_ &V0 Displays Active and Stored Profile 0

&V1 Displays Active and Stored Profile 1

&W_ &W0 Stores the active profile as Configuration

Profile 0

&W1 Stores the active profile as Configuration

Profile 1

&Y_ &Y0 Configuration Profile 0 active upon Power

on or reset

&Y1 Configuration Profile 1 active upon Power on

or reset

&Zn=x n=0-3 Store telephone number x into non-volatile

RAM

%E_ %E0 V.22bis auto-retrain disabled

%E1 V.22bis auto-retrain enabled

%G_ %G0 Enable Auto Fall Forward/Back

%G1 Disable Auto Fall Forward/Back

3.5 MNP/V.42/V.42bis Commands

%An n=0- Set auto-reliable fallback character to n (where

127 n = 0 to 127,ASCII). Requires the \C2 setting

%C_ %C0 Disable MNP Class 5 data compression

%C1 Enable MNP Class 5 data compression

\A_ \A0 64-character maximum MNP block size

\A1 128-character maximum MNP block size

\A2 192-character maximum MNP block size

\A3 256-character maximum MNP block size

\Bn n=1-9 Send a 1/10 second line break to the modem,

where n = 1 to 9. At normal connect, the

default is 3

\C_ \C0 Do not buffer data during LAPM/MNP

handshaking

\C1 Buffer all data for 4 seconds, until receiving

200 characters or until a packet is detected

\C2 Do not buffer data; switch to normal mode

when fallback character is detected

\G_ \G0 Disable DCE flow control

\G1 Enable DCE flow control

\J_ J0 Disable serial port data rate adjustment

(keep high data rate between DTE and

modem, regardless of modem-to-modem

data rate)

J1 Enable serial port data rate adjustment so

serial data rate automatically adjusts to match

the modem-to-modem data rate

\Kn n=0-5 Set break control, where n= 0 to 5. Default

is 5

\N_ \N0 Normal data-link only

\N1 Direct data-link only

\N2 MNP data link only

\N3 V.42/MNP/Normal data link

\N4 V.42 data link only

\O Initiate reliable link during a normal link

\Q_ \Q0 Turn off flow control

\Q1 XON/XOFF software flow control

\Q2 CTS signal unidirectional hardware flow

control

\Q3 RTS/CTS signal bi-directional hardware

flow control

\Tn Inactivity timer, where n = 0 to 90 minutes.

Default is 0

\U Accept reliable link during a normal link

\V_ \V0 Do not send extended responses

\V1 Send extended response set 1

\V2 Send extended response set 2

\X_ \X0 Process XON/XOFF but don’t pass through

\X1 Process XON/XOFF and pass through

\Y Switch to reliable link from normal link

\Z End the reliable connection and switch to

normal operation

-J -J0 Disable error control detection phase

-J1 Enable error control detection phase

"H "H0 V.42bis data compression disabled

"H1 Can send but not receive V.42bis data

compression

"H2 Can receive but not send V.42bis data

compression

"H3 Bidirectional V.42bis data

compression enabled

"On n=6- Set maximum V.42bis data block size to n.

250 Default is 16

3.6 Fax Class 1 Commands

+FAA=n Data/Fax auto answer enable. Default is 0

+FAE=n Data/Fax auto answer enable. Default is 0

+FCLASS? Returns current operating mode

+FCLASS=n Sets operating mode

+FCLASS=? Returns available supported modes

+FMFR? Identify modem manufacturer

+FMDL? Identify product model

+FPREV? Identify product revision

+FRH=<mod> Receive HDLC data

+FRHM=<mod> Receive data

+FRS=<time> Wait for silence

+FRTn Fax receive test command

+FTH=<mod> Transmit HDLC data

+FTM=<mod> Transmit data

+FTS=<time> Stop transmission and pause

+FTTn Fax transmit test command

3.7 Voice Mode Commands

#VBP Generate beep tone

#VCL=n Voice mode selection. Default is 0

#VCSD=n Command mode silence detection. Default is 0

#VGPS=n Input pin function selection. Default is 0

#VGPC=n Input pin character selection. Default is 0

#VIN Read general purpose input pins

#VIP=n Initialize parameter. Default is 0

#VLN=n Relay/speaker control. Default is 0

#VOUT=n Write to output pins. Default is 0

#VPH Telephone emulation mode.

#VPL=n Play level. Default is 127

#VPY Play mode

#VRD Record mode

#VRL=n Recording level. Default is 127

#VSL=n Recording silence threshold level. Default

is 127

#VSM=n Sampling mode. Default is CL1

#VSQT=n Record mode “q” silence time. Default is 60

#VSR=n Sampling rate. Default is 9600

#VSST=n Record mode “s” silence time. Default is 60

Setion Four - S Registers

Your modem has 35 registers, designated S0 through

S30, S37, S90, S108, and S109. Table 4-1 shows the regis-

ters, their functions, and their default values. Some registers

can have their values changed by commands. If you use a

command to change a register value, the command remains

in effect until you turn off or reset your modem. Your modem

then reverts to the operating characteristics specified in its

non-volatile memory. Refer to Section 3 for information on

how to use the AT commands to manipulate the S registers.

Table 4-1 S - Registers

S0 Auto-answer Ring 0-255/rings 0

S1 Ring counter 0-255/rings 0

S2 Escape code character 0-127/ASCII 43

S3 Carriage return character 0-127/ASCII 13

S4 Line feed character 0-127/ASCII 10

S5 Backspace character 0-32, 127/ASCII 8

S6 Dial tone wait time 0-255/seconds 2

S7 Remote carrier wait time 1-255/seconds 30

S8 Comma pause time 0-255/seconds 2

S9 Carrier detect time 0-255/0.1 second 6

S10 Carrier loss time 0-255/0.1 second 14

S11 Touch-tone dialing speed 50-255/0.001 second 70

S12 Esc. character detect time 0-255/0.02 second 50

S13 Reserved

S14 Echo, response, dialing, Bit-mapped

originate/answer

S15 Reserved

S16 Modem test options Bit-mapped

S17 Reserved

S18 Modem test timer 0-255/seconds 0

S19 Reserved

S20 Reserved

S21 DTR, DCD, DSR, and Bit-mapped

Long Space Disconnect

S22 Speaker and response Bit-mapped

S23 RDL, DTE data rate, Bit-mapped

parity,and guard tone

S24 Reserved

S25 DTR delay 0-100/seconds 5

S26 RTS/CTS delay interval 0-255/0.01 second 1

S27 Async operation, CCITT/ Bit-mapped

Bell mode

S28 Reserved

S29 Reserved

S30 Sleep mode time 0-90/seconds 10

S37 Maximum line speed 0-11 0

S90 Disconnect timer 0-255/seconds 0

S108 Retrain options 0-3 2

S109 Line Speed permitted 2-62 62

Section Five - Result Codes

BASIC RESPONSE CODES

OK 0 CONNECT 1

RING 2 NO CARRIER 3

ERROR 4 CONNECT 1200 5

NO DIALTONE 6 BUSY 7

NO ANSWER 8 CONNECT 2400 10

CONNECT 4800 11 CONNECT 7200 12

DATA 13 CONNECT 9600 14

FAX 15 CONNECT 12000 16

CONNECT 14400 17 +FCERROR +F4

MODIFIED RESPONSE CODES (\V1)

CONNECT 300/REL 22 CONNECT 1200/REL 24

CONNECT 2400/REL 25 CONNECT 4800/REL 26

CONNECT 7200/REL 27 CONNECT 9600/REL 28

CONNECT 12000/REL 29 CONNECT 14400/REL 30

EXTENDED RESPONSE CODES (\V2)

CONNECT 300/REL-MNP 32

CONNECT 1200/REL-MNP 34

CONNECT 2400/REL-MNP 35

CONNECT 4800/REL-MNP 36

CONNECT 7200/REL-MNP 37

CONNECT 9600/REL-MNP 38

CONNECT 12000/REL-MNP 39

CONNECT 14400/REL-MNP 40

CONNECT 300/REL-MNP 5 42

CONNECT 1200/REL-MNP 5 44

CONNECT 2400/REL-MNP 5 45

CONNECT 4800/REL-MNP 5 46

CONNECT 7200/REL-MNP 5 47

CONNECT 9600/REL-MNP 5 48

CONNECT 12000/REL-MNP 5 49

CONNECT 14400/REL-MNP 5 50

CONNECT 1200/REL-LAPM 54

CONNECT 2400/REL-LAPM 55

CONNECT 4800/REL-LAPM 56

CONNECT 7200/REL-LAPM 57

CONNECT 9600/REL-LAPM 58

CONNECT 12000/REL-LAPM 59

CONNECT 14400/REL-LAPM 60

CONNECT 1200/REL-LAPM V.42BIS 64

CONNECT 2400/REL-LAPM V.42BIS 65

CONNECT 4800/REL-LAPM V.42BIS 66

CONNECT 7200/REL-LAPM V.42BIS 67

CONNECT 9600/REL-LAPM V.42BIS 68

CONNECT 12000/REL-LAPM V.42BIS 69

CONNECT 14400/REL-LAPM V.42BIS 70

Section Six - Troubleshooting

This section describes some of the common problems

you may encounter while using your modem. If you can not

resolve your difficulty after reading this chapter, contact your

dealer or vendor for assistance.

Modem does not respond to commands.

1. Make sure the modem is not configured with a conflicting

COM port and IRQ setting (see Section 2.4). Your modem

can not be configured as COM1 (default) if another device in

your system is also configured as COM1. Similarly, IRQ

settings may not overlap.

2. Make sure the communication software is configured to

“talk” to the modem on the correct COM port and IRQ setting

(same COM port and IRQ setting as the modem). Your

communication software must know which address your

modem is using in the system in order to pass data to it.

Similarly, IRQ settings must be set correctly to receive data

from the modem.

3. Make sure that your modem is initialized correctly. Your

modem may have been initialized to not display responses.

You may factory-reset the modem by issuing AT&F and

press ENTER. The factory default allows the modem to

display responses after a command has been executed.

4. Make sure the baud rate setting in your software is set to

57600, 38400, 19200, 14400, 9600, 2400, 1200, or 300 bps.

An incorrect baud rate prevents the modem from operating

properly.

Modem does not dial.

1. Make sure the modem is connected to a working phone line.

Replace the modem with a working phone to ensure that the

phone line is working.

2. Make sure the phone line is connected to the jack marked

“LINE.” Incorrect connection prevents the modem from

operating properly. Refer to Section 2.2 for modem connec-

tion instructions.

Modem dials but does not connect.

1. Make sure the IRQ setting is identical on both the modem

AND the software. Modem and software must be configured

identically.

2. Make sure the phone line is working properly. Replace the

modem with a regular phone and dial the number. If the line

sounds noisy, you may have difficulty connecting to the

remote device.

Modem makes a connection but no data appears

on your screen.

1. The remote system may be waiting to receive your data before

it begins. Try pressing the ENTER key a few times.

2. Make sure the correct data format (data bits, stop bits, and

parity bits) and flow control (RTS/CTS) method are being

used.

3. Make sure the correct terminal emulation mode is being used

(see communication software manual).

4. Make sure the modem is not sharing an IRQ or COM port with

another device (see Section 2.4).

High pitch tone is heard whenever you answer the

phone.

1. Make sure Auto-Answer is turned off. Your modem is factory

configured to NOT auto-answer. Issue AT&F to factory reset

your modem.

Modem experiences errors while communicating

with a remote modem.

1. Make sure the DTE speed is the same as the modem connec-

tion speed when in Direct Mode (\N1 command in effect).

2. Make sure the remote system and your modem use the same

communication parameters (i.e., baud rate, data bit length,

parity, and stop bit).

3. Make sure RTS/CTS hardware flow control is enabled and

XON/XOFF software flow control is disabled in the commu-

nication software.

4. Make sure the data speed is not faster than your computer's

capability. Most IBM compatibles are capable of 19,200 bps

under DOS and Windows. Operating at higher speeds under

Windows requires a faster CPU (386/486 or better).

Modem experiences bursts of errors or suddenly

disconnects while communicating with a remote

modem.

1. Make sure Call Waiting is turned off.

2. Make sure the phone line does not exhibit excess noise.

Modem exhibits poor voice record or playback.

1. Make sure the correct modem type is selected in the Voice/

FAX software. Use “Cirrus Logic” or similar selection. Do

not select “Rockwell or Rockwell ICS” configuration.

Section Seven - Specifications

CCITT/Bell Std. V.42bis, V.42, V.32bis, V.32, V.29,

V.27ter, V.22bis, V.22, V.21, V.17,

Bell212/103

MNP protocols: MNP 5, 4, 3, 2

Host Interface: 8 bit PC bus

COM ports: 1, 2, 3, 4

IRQ lines: 2, 3, 4, 5

FAX Group: Group III Send/Receive Standard

FAX Command set: EIA/TIA-578 Service Class 1

Voice Command set: Cirrus Logic

Escape Detection: TIES Escape Sequence

Transmit level: -12 dBm +/- 1 dB

Receiver Sensitivity: -40 dBm

UART: 16550 compatible

Data format: 300-57600 bps (8N1, 7E1,7E2,7O1,7O2)

Power: 0.75 W

Temperature: 0 to 55 degrees C (Operating); -20 to 80

degrees C (Non-operating)

Section Eight - Support and Service

In the unlikely event you experience difficulty in the use of this

product, we suggest you: (1) consult the Troubleshooting section

of this guide and (2) consult with your dealer. To obtain service for

this product, follow the Return Merchandise Authorization Proce-

dure as outlined in the Warranty card.

Section Nine - FCC , DOC & Other Notices

9.1 FCC Compliance

This equipment complies with Part 68 of the FCC Rules. On this

equipment is a label that contains, among other information, the

FCC registration number and Ringer Equivalence Number (REN)

for this equipment. You must, upon request, provide this informa-

tion to your telephone company.

If your telephone equipment causes harm to the telephone net-

work, the Telephone Company may discontinue your service

temporarily. If possible, they will notify in advance. But, if

advance notice isn’t practical, you will be notified as soon as

possible. You will be informed of your right to file a complaint

with the FCC.

Your telephone company may make changes in its facilities,

equipment, operations, or procedures that could affect proper

operation of your equipment. If they do, you will be notified in

advance to give you an opportunity to maintain uninterrupted

telephone service.

The FCC prohibits this equipment to be connected to party lines or

coin-telephone service.

In the event that this equipment should fail to operate properly,

disconnect the equipment from the phone line to determine if it is

causing the problem. If the problem is with the equipment, discon-

tinue use and contact your dealer or vendor.

The FCC also requires the transmitter of a FAX transmission be

properly identified (per FCC Rules Part 68, Sec. 68.381 (c) (3)).

9.2 FCC Class B Statement

This equipment has been tested and found to comply with the limits

for a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against

harmful interference in a residential installation. This equipment

generates, uses and can radiate radio frequency energy, and if not

installed and used in accordance with the instructions, may cause

harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equip-

ment off and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and the receiver

• Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected

• Consult the dealer or an experienced radio / TV technician for

help

Notice: 1) Shielded cables, if any, must be used in order to comply

with the emission limits. 2) Any change or modification not

expressly approved by the Grantee of the equipment authorization

could void the user’s authority to operate the equipment.

9.3 DOC Compliance Information

NOTICE: The Canadian Department of Communications label

identifies certified equipment. This certification means that the

equipment meets certain telecommunications network protective,

operational and safety requirements. The Department does not

guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users ensure that it is permissible

to be connected to the facilities of the local telecommunications

company. The equipment must also be installed using an accept-

able method of connection. The customer should be aware that

compliance with the above conditions may not prevent degrada-

tion of service in some situations.

Repairs to certified equipment should be made by an authorized

Canadian maintenance facility designated by the supplier. Any

repairs or alterations made by the user to this equipment, or

equipment malfunctions, may give the telecommunications com-

pany cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical

ground connections of the power utility, telephone lines and

internal metallic water pipe system, if present, are connected

together. This precaution may be particularly important in rural

areas.

Caution: Users should not attempt to make such connections

themselves, but should contact the appropriate electric inspection

authority, or electrician, as appropriate.

NOTICE: The Load Number (LN) assigned to each terminal

device denotes the percentage of the total load to be connected to

a telephone loop which is used by the device, to prevent overload-

ing. The termination on a loop may consist of any combination of

devices subject only to the requirement that the sum of the Load

Numbers of all the devices does not exceed 100.

9.4 Disclaimer, Copyright, And Other Notices

The information contained in this manual has been validated at the

time of this manual's production. The manufacturer reserves the

right to make any changes and improvements in the product

described in this manual at any time and without notice. Conse-

quently the manufacturer assumes no liability for damages in-

curred directly or indirectly from errors, omissions or discrepan-

cies between the product and the manual.

All registered trademarks are the property of their respective

owners.

document in any form is permitted without prior written authori-

zation from the manufacturer.

First Edition GZ/DR - Version 1.0

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MaxTech xm144ic V.32bis User manual

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Model: xm144ic V.32bis

Category: Networking

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